A tunable waveguide to cavity coupler for high power accelerator cavities
DSpace at IIT Bombay
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Title |
A tunable waveguide to cavity coupler for high power accelerator cavities
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Creator |
KUMAR, R
SINGH, P UNNIKRISHNAN, D KUMAR, G |
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Subject |
Waveguide iris coupler
Ridge waveguide coupler Coupling coefficient Waveguide to cavity coupling External quality factor Tunable coupler COEFFICIENT |
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Description |
The end iris ridge waveguide couplers are used to couple power to accelerator cavities through a reduced size coupling port. However, higher electric and magnetic fields due to reduced size lead to strict requirements on dimensional tolerances during coupler fabrication process. It is shown by detailed parametric analysis that even small dimensional changes during manufacturing or operation can lead to undesired shift in design frequency and deterioration of return loss. Hence, transmitted power testing of two couplers connected back to back without an intermediate cavity cannot be carried out. Here, we propose cylindrical static tuners on impedance matching section to relax the dimensional tolerance requirements. It is also shown that an iris coupled coupler-cavity system is more tolerant towards coupler dimensional changes than a stand-alone coupler. However, same tuners can find use for tuning the coupling coefficient of coupler-cavity system. The proposed tuning scheme is expected to reduce the coupler manufacturing costs and provide an useful alternative for coupling coefficient tuning over iris machining. (C) 2011 Elsevier B.V. All rights reserved.
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Publisher |
ELSEVIER SCIENCE BV
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Date |
2014-10-16T05:37:06Z
2014-10-16T05:37:06Z 2012 |
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Type |
Article
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Identifier |
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 664(1)203-213
http://dx.doi.org/10.1016/j.nima.2011.10.032 http://dspace.library.iitb.ac.in/jspui/handle/100/15354 |
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Language |
en
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